3-D or 2-D?

Before the school holidays officially started, our Science teacher asks us to enter the chart making competiton with an independent theme.

so, I decided to make a model about the Black Smokers-the underwater vent.

But what im confused of was, whether it'll going to be a 3d model or 2d. of course, there is a pros and cons of both of them...

If its 3d, maybe i'll get more impression marking from the panel of judges and I have the picture of what its going to be. Unfortunately, with this short time and I kinda not-so-rajin to do a 3d chart... so I think it'll going to be a 2d chart

If its 2d, maybe I still have enough time to do so, but.. maybe I'll get a lower impression marking from the judges...